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Defect formation in layered ionic crystals of (CnH2n+1NH3)2MCl4:M=Cd, Cu, Mn;n=1,2,3 and CsMnCl3-2H20
Author(s): Takehisa Yoshinari; Tomochika Matsuyama; Shigetaka Shimanuki; Takao Nanba; Masami Fujisawa; Hitoshi Yamaoka; Tomoyoshi Kamikawa; Kiyoshi Aoyagi
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Paper Abstract

Metal precipitation has been observed at the 2D crystals of alkylammonium metal chlorides, (CnH2n+1NH3)2MCl4 which were X- or (gamma) -irradiated at 77 K and warmed to room temperature. It has been also observed in the 1D crystals of CsMnCl3(DOT)2H2O which was irradiated at room temperature similar as photochromism of silver halides. The different temperature conditions of metal precipitation suggest a variety of defect formation mechanisms. In alkylammonium metal chlorides, Cl2- molecule ions are formed at 77 K and electron trap centers are observed at 15 K with X-ray irradiation. The electron trap centers are very unstable and are bleached at temperatures higher than 30 K.

Paper Details

Date Published: 9 February 1995
PDF: 11 pages
Proc. SPIE 2362, International Conference on Excitonic Processes in Condensed Matter, (9 February 1995); doi: 10.1117/12.200970
Show Author Affiliations
Takehisa Yoshinari, Yamagata Univ. (Japan)
Tomochika Matsuyama, Kyoto Univ. (Japan)
Shigetaka Shimanuki, Osaka Women's Univ. (Japan)
Takao Nanba, Kobe Univ. (Japan)
Masami Fujisawa, Univ. of Tokyo (Japan)
Hitoshi Yamaoka, Kyoto Univ. (Japan)
Tomoyoshi Kamikawa, Kyoto Univ. (Japan)
Kiyoshi Aoyagi, Koyodai (Japan)


Published in SPIE Proceedings Vol. 2362:
International Conference on Excitonic Processes in Condensed Matter
Jai Singh, Editor(s)

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